Number of n X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically.
A208063
Number of n X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically.
Terms
- a(0) =2a(1) =16a(2) =72a(3) =576a(4) =3696a(5) =26244a(6) =198000a(7) =1638400a(8) =12913840a(9) =117722500a(10) =1052059680a(11) =10059287616a(12) =97769309736
External references
- oeis: A208063